EP 1283003 B1 20081112 - SYSTEM CONSISTING OF A MICROPHONE AND AN AMPLIFIER
Title (en)
SYSTEM CONSISTING OF A MICROPHONE AND AN AMPLIFIER
Title (de)
AUS EINEM MIKROFON UND EINEM VERSTÄRKER BESTEHENDES SYSTEM
Title (fr)
SYSTEME COMPOSE D'UN MICROPHONE ET D'UN AMPLIFICATEUR
Publication
Application
Priority
- NL 0100377 W 20010517
- NL 1015222 A 20000517
Abstract (en)
[origin: WO0189264A1] Microphone/amplifier system in which the microphone comprises a case with an inlet opening, a diaphragm and a backplate, and the amplifier is arranged in the case and is coupled to the diaphragm/backplate system. In the case, the diaphragm forms a first partition between a first compartment containing the inlet opening to the surroundings and a second compartment accommodating the amplifier. According to the invention, the second compartment is divided by a second partition into a first and a second subcompartment, while an opening of a predetermined volume is provided in the second partition, this volume having a magnitude such that air in the first subcompartment can be caused to vibrate only with sound vibrations of low frequencies. Through this feature, the frequency characteristic of the system can be influenced.
IPC 8 full level
H04R 19/01 (2006.01); H04R 1/22 (2006.01); H04R 1/04 (2006.01); H04R 25/00 (2006.01)
CPC (source: EP US)
H04R 1/222 (2013.01 - EP US); H04R 19/016 (2013.01 - EP US); H04R 1/04 (2013.01 - EP US); H04R 25/00 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0189264 A1 20011122; AT E414396 T1 20081115; AU 5893301 A 20011126; DE 60136538 D1 20081224; DK 1283003 T3 20090302; EP 1283003 A1 20030212; EP 1283003 B1 20081112; NL 1015222 C2 20011120; US 2001043705 A1 20011122; US 6950529 B2 20050927
DOCDB simple family (application)
NL 0100377 W 20010517; AT 01932406 T 20010517; AU 5893301 A 20010517; DE 60136538 T 20010517; DK 01932406 T 20010517; EP 01932406 A 20010517; NL 1015222 A 20000517; US 86001001 A 20010517